Cushion|Lab Grown|IGI

1.05ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG811671099

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG811671099

Diamond specifications and retailer prices

From £176 GBP
As of October 30, 2026
Save £569 GBP (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £791 GBP at Reve Diamonds · As of October 11, 2026
View at Reve Diamonds

About this 1.05ct lab-grown cushion diamond

This 1.05ct lab-grown cushion sits in the classic one-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG811671099 or 811671099. Listed at 13 retailers as of October 27, 2026, with a 323% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle28.4°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811671099
Dimensions7.15 × 5.55 × 3.61 mm
L/W Ratio1.29
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.15 mm5.55 mm1.05 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811671099
Side View
Table 63.0%Crown 28.4°Girdle: MED-STKPavilion 38.5°Culet: NoneDepth 65.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £176 GBP|Low: £128 GBP|High: £827 GBP|Avg: £383 GBP|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Reve Diamonds
October 30, 2026
Retailer 4£131 GBP
Retailer 1£176 GBP
Retailer 11£252 GBP
Retailer 2£252 GBP
Retailer 6£258 GBP
Retailer 5£266 GBP
Retailer 7£269 GBP
Retailer 9£279 GBP
Retailer 12£357 GBP
Retailer 13£385 GBP
Retailer 3£513 GBP
Retailer 8£690 GBP
Retailer 10£745 GBP
Reve Diamonds£791 GBP

34 data points across 14 retailers

13 retailers£176 GBP to £745 GBP

A
Cheapest Retailer
-
£176 GBP
A
Retailer 2
-
£252 GBP
ZAR 5,459 ZAR
View
A
Retailer 3
-
£252 GBP
$338 USD
View
A
Retailer 4
-
£258 GBP
View
A
Retailer 5
-
£266 GBP
$357 USD
View
A
Retailer 6
-
£269 GBP
€344 EUR
View
A
Retailer 7
-
£279 GBP
View
A
Retailer 8
-
£357 GBP
A$738 AUD
View
B+
Retailer 9
-
£385 GBP
$516 USD
View
B+
Retailer 10
-
£513 GBP
$688 USD
View
B
Retailer 11
-
£690 GBP
View
B
Retailer 12
-
£745 GBP
$1,000 USD
View
Most Expensive
Reve Diamonds
CC358D5EC · Oct 11
£791 GBP
$1,062 USD
View
Price last confirmed 22 days ago
12 more retailers have this diamond
Prices start from £176 GBPSave up to £569 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.05ct Cushion
£176 GBP